222 lines
7.8 KiB
C
222 lines
7.8 KiB
C
/*
|
|
* Copyright (c) 2003-2004, Artem B. Bityuckiy
|
|
* Copyright (c) 1999,2000, Konstantin Chuguev. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
#ifndef __ICONV_CONVERSION_H__
|
|
#define __ICONV_CONVERSION_H__
|
|
|
|
#include <_ansi.h>
|
|
#include <reent.h>
|
|
#include <sys/types.h>
|
|
#include <wchar.h>
|
|
|
|
/* Bits for 'flags' parameter of 'convert' call */
|
|
#define ICONV_DONT_SAVE_BIT 1
|
|
#define ICONV_FAIL_BIT 2
|
|
|
|
/*
|
|
* iconv_conversion_handlers_t - keeps iconv conversion handlers.
|
|
*
|
|
* Keeps 6 interface function handlers:
|
|
* open(), close(), convert(), get_mb_cur_max(), get_state(), set_state(),
|
|
* get_mb_cur_max() and is_stateful(). Last 5 interface functions are needed to
|
|
* support locale subsystem.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/*
|
|
* open - open and initialize conversion.
|
|
*
|
|
* PARAMETERS:
|
|
* struct _reent *rptr - reent structure of current thread/process;
|
|
* _CONST char *to - output encoding's normalized name;
|
|
* _CONST char *from - input encoding's normalized name.
|
|
*
|
|
* DESCRIPTION:
|
|
* This function is called from iconv_open() to open conversion. Returns
|
|
* a pointer to conversion-specific data.
|
|
*
|
|
* RETURN:
|
|
* Pointer to conversion-specific data if success. In case of error
|
|
* returns NULL and sets current thread's/process's errno.
|
|
*/
|
|
_VOID_PTR _EXPARM(open, (struct _reent *rptr,
|
|
_CONST char *to,
|
|
_CONST char *from));
|
|
|
|
/*
|
|
* close - close conversion.
|
|
*
|
|
* PARAMETRS:
|
|
* struct _reent *rptr - reent structure of current thread/process;
|
|
* _VOID_PTR data - conversion-specific data.
|
|
*
|
|
* DESCRIPTION:
|
|
* This function is called from iconv_close() to close conversion.
|
|
*
|
|
* RETURN:
|
|
* When successful, returns (size_t)0. In case of error, sets current
|
|
* thread's/process's errno and returns (size_t)-1 (same as iconv_open()).
|
|
*/
|
|
size_t _EXPARM(close, (struct _reent *rptr,
|
|
_VOID_PTR data));
|
|
|
|
/* convert - perform encoding conversion.
|
|
*
|
|
* PARAMETERS:
|
|
* struct _reent *rptr - reent structure of current thread/process.
|
|
* _VOID_PTR data - conversion-specific data;
|
|
* _CONST unsigned char **inbuf - input data buffer;
|
|
* size_t *inbytesleft - input buffer's length;
|
|
* unsigned char **outbuf - output data buffer;
|
|
* size_t *outbytesleft - output buffer free space;
|
|
* int flags - conversion options.
|
|
*
|
|
* DESCRIPTION:
|
|
* This function is called from iconv() to perform conversion and, if 'flags'
|
|
* is 0, behaves similarly to iconv(). 'inbuf', 'inbytesleft', 'outbuf' and
|
|
* 'outbytesleft' are same as in case of iconv() function.
|
|
*
|
|
* When flags & 1 isn't 0, 'outbuf' value is ignored and result isn't saved.
|
|
* Another conversion aspects aren't changed.
|
|
*
|
|
* When flags & 2 isn't 0, function changes it's behavior in situations,
|
|
* when there is no character in "to" encoding that corresponds to valid
|
|
* character from "from" encoding. iconv() specification stands to perform
|
|
* implimentation-spacific default conversion. If flag & 2 isn't 0,
|
|
* function generates error.
|
|
*
|
|
* RETURN:
|
|
* Returns the number of characters converted in a non-reversible way.
|
|
* Reversible conversions are not counted. In case of error, sets current
|
|
* thread's/process's errno and returns (size_t)-1 (same as iconv()).
|
|
*/
|
|
size_t _EXPARM(convert, (struct _reent *rptr,
|
|
_VOID_PTR data,
|
|
_CONST unsigned char **inbuf,
|
|
size_t *inbytesleft,
|
|
unsigned char **outbuf,
|
|
size_t *outbytesleft,
|
|
int flags));
|
|
|
|
/*
|
|
* get_state - get current shift state.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - conversion-specific data;
|
|
* mbstate_t *state - mbstate_t object where shift state will be written;
|
|
* int direction - 0-"from", 1-"to".
|
|
*
|
|
* DESCRIPTION:
|
|
* Returns encoding's current shift sequence.
|
|
* If 'direction' is 0, "from" encoding is tested, else
|
|
* "to" encoding is tested.
|
|
*/
|
|
_VOID _EXPARM(get_state, (_VOID_PTR data,
|
|
mbstate_t *state,
|
|
int direction));
|
|
|
|
/*
|
|
* set_state - set shift state.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - conversion-specific data;
|
|
* mbstate_t *state - mbstate_t object to which shift state will be set.
|
|
* int direction - 0-"from", 1-"to".
|
|
*
|
|
* DESCRIPTION:
|
|
* Sets encoding's current shift state to 'state'. if 'state'
|
|
* object is zero-object - reset current shift state.
|
|
* If 'direction' is 0, "from" encoding is set, else
|
|
* "to" encoding is set.
|
|
* Returns 0 if '*state' object has right format, -1 else.
|
|
*/
|
|
int _EXPARM(set_state, (_VOID_PTR data,
|
|
mbstate_t *state,
|
|
int direction));
|
|
|
|
/*
|
|
* get_mb_cur_max - get maximum character length in bytes.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - conversion-specific data;
|
|
* int direction - 0-"from", 1-"to".
|
|
*
|
|
* DESCRIPTION:
|
|
* Returns encoding's maximum character length.
|
|
* If 'direction' is 0, "from" encoding is tested, else
|
|
* "to" encoding is tested.
|
|
*/
|
|
int _EXPARM(get_mb_cur_max, (_VOID_PTR data,
|
|
int direction));
|
|
|
|
/*
|
|
* is_stateful - is encoding stateful or stateless.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - conversion-specific data;
|
|
* int direction - 0-"from", 1-"to".
|
|
*
|
|
* DESCRIPTION:
|
|
* Returns 0 if encoding is stateless and 1 if stateful.
|
|
* If 'direction' is 0, "from" encoding is tested, else
|
|
* "to" encoding is tested.
|
|
*/
|
|
int _EXPARM(is_stateful, (_VOID_PTR data,
|
|
int direction));
|
|
|
|
} iconv_conversion_handlers_t;
|
|
|
|
|
|
/*
|
|
* iconv_conversion_t - iconv conversion definition structure.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/* Iconv conversion handlers. */
|
|
_CONST iconv_conversion_handlers_t *handlers;
|
|
|
|
/*
|
|
* Conversion-specific data (e.g., points to iconv_ucs_conversion_t
|
|
* object if UCS-based conversion is used).
|
|
*/
|
|
_VOID_PTR data;
|
|
} iconv_conversion_t;
|
|
|
|
|
|
/* UCS-based conversion handlers */
|
|
extern _CONST iconv_conversion_handlers_t
|
|
_iconv_ucs_conversion_handlers;
|
|
|
|
/* Null conversion handlers */
|
|
extern _CONST iconv_conversion_handlers_t
|
|
_iconv_null_conversion_handlers;
|
|
|
|
#endif /* !__ICONV_CONVERSION_H__ */
|
|
|